Sorry if this is a repeat post, but I didn’t find this in my searches; there are quite a few references on the ‘Net but nothing reliable-sounding.

The phrase “not a hill to die on” came up today. My first thought was that it sounded military, perhaps Civil War. Girlfriend first heard it as a reference to the hill* where Jesus was crucified. I have read other suppositions that are similar in theme but never convincing. Any input from readers?

Thanks in advance!

*Wow, as a raised-Roman-Catholic (though more than 10 years non-practicing) I should be able to remember the correct name/term for this stuff.